Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three…
Historical advisory recorded 25 Oct 2026 16:19:04 UTC. Read the latest advisory.
nvd · CVE-2026-77281
PublishedCaddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite() can pass attacker-controlled replacement bytes through buildQueryString for a second placeholder expansion when a rewrite URI ends with a literal question mark, allowing injected environment or request-variable placeholders to disclose data and, when the file provider is registered, allowing injected file placeholders to disclose readable files. The issue is fixed in version 2.11.4.
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nvd · CVE-2026-77281
PublishedNVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.
Source analysis status: Awaiting Analysis
Weakness classifications: CWE-94 · CWE-178 · CWE-770
Original publisher date fields
published: 2026-09-17T21:17:37.890
lastModified: 2026-09-24T21:16:28.120
No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.
Original source record · Cite this exact observation · Complete original publisher JSON